I can understand what you mean... I've been through a rough patch of blue balls as well.
Things that work for me:
- Avoid all triggers/edging/anything that will remotely turn you on
- cold showers help heaps!
- meditate (even 10 mins is helpful)
- do a Valsalva maneuver
- When the aching was really bad for me, I once popped a painkiller to help.
After a few days, the aching will ease...
Remind yourself why you are doing NoFap. Stay strong and stay clean!